/usr/lib/python3/dist-packages/ufl/protocols.py is in python3-ufl 2016.2.0-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | # -*- coding: utf-8 -*-
# Copyright (C) 2008-2016 Martin Sandve Alnæs
#
# This file is part of UFL.
#
# UFL is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# UFL is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with UFL. If not, see <http://www.gnu.org/licenses/>.
def id_or_none(obj):
"""Returns None if the object is None, obj.ufl_id() if available, or id(obj) if not.
This allows external libraries to implement an alternative
to id(obj) in the ufl_id() function, such that ufl can identify
objects as the same without knowing about their types.
"""
if obj is None:
return None
elif hasattr(obj, 'ufl_id'):
return obj.ufl_id()
else:
return id(obj)
def metadata_equal(a, b):
return (sorted((k, id(v)) for k, v in list(a.items())) ==
sorted((k, id(v)) for k, v in list(b.items())))
def metadata_hashdata(md):
return tuple(sorted((k, id(v)) for k, v in list(md.items())))
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